"Those who received kickbacks will not leave behind the proof for us to prosecute them, but we will have to prove it (that kickbacks were received)," he said.
"It is for us to prove everything now. Since the issue would be placed in Parliament, I would not like to speak in detail to media," the Defence Minister further said.
"Why no action was taken against the company till 2014? Why was the company not blacklisted by then UPA government?" Parrikar questioned.
"I challenge the Congress to show the UPA government's order blacklisting the AgustaWestland company. Let them reply first why it was not banned. It was during our (NDA) government that we banned it," he said.
Parrikar had recently challenged the Congress to show the order by the UPA government confirming the blacklisting.
AgustaWestland was not blacklisted during the UPA rule, top Modi government sources had recently claimed, asserting it was the NDA dispensation which had put on hold all acquisition proposals with the VVIP chopper scam-tainted firm.
Parrikar was speaking to reporters on the sidelines of an event to lay foundation stone for a football ground in Panaji.
The deal for the choppers went off track in 2013 when Italy arrested the head of Finmeccanica, which owns AgustaWestland, for paying bribes to secure the deal.
An Italian court, which convicted AgustaWestland chief Giuseppe Orsi, had reportedly described how the firm paid bribes to top Congress leaders to bag the Rs 3,600 crore deal.
Business Standard has always strived hard to provide up-to-date information and commentary on developments that are of interest to you and have wider political and economic implications for the country and the world. Your encouragement and constant feedback on how to improve our offering have only made our resolve and commitment to these ideals stronger. Even during these difficult times arising out of Covid-19, we continue to remain committed to keeping you informed and updated with credible news, authoritative views and incisive commentary on topical issues of relevance.
We, however, have a request.
As we battle the economic impact of the pandemic, we need your support even more, so that we can continue to offer you more quality content. Our subscription model has seen an encouraging response from many of you, who have subscribed to our online content. More subscription to our online content can only help us achieve the goals of offering you even better and more relevant content. We believe in free, fair and credible journalism. Your support through more subscriptions can help us practise the journalism to which we are committed.
Support quality journalism and subscribe to Business Standard.